A Hybrid Level Set Optimization Design Method of Functionally Graded Cellular Structures Considering Connectivity

作     者：Yan Dong Kang Zhao Liang Gao Hao Li 

作者机构：The State Key Lab of Digital Manufacturing Equipment and TechnologyHuazhong University of Science and TechnologyWuhan430074China Institute of Systems EngineeringChina Academy of Engineering PhysicsMianyang621900China 

出 版 物：《Computers, Materials & Continua》 (计算机、材料和连续体（英文）)

年 卷 期：2024年第79卷第4期

页      面：1-18页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：the National Key Research and Development Program of China(Grant Number 2021YFB1714600) the National Natural Science Foundation of China(Grant Number 52075195) the Fundamental Research Funds for the Central Universities,China through Program No.2172019kfyXJJS078 

主　　题：Hybrid level set method functionally graded cellular structure connectivity interpolated transition optimization design 

摘      要：With the continuous advancement in topology optimization and additive manufacturing(AM)technology,the capability to fabricate functionally graded materials and intricate cellular structures with spatially varying microstructures has grown ***,a critical challenge is encountered in the design of these structures–the absence of robust interface connections between adjacent microstructures,potentially resulting in diminished efficiency or macroscopic failure.A Hybrid Level Set Method(HLSM)is proposed,specifically designed to enhance connectivity among non-uniform microstructures,contributing to the design of functionally graded cellular *** HLSM introduces a pioneering algorithm for effectively blending heterogeneous microstructure ***,an interpolation algorithm is presented to construct transition microstructures seamlessly connected on both ***,the algorithm enables the morphing of non-uniform unit cells to seamlessly adapt to interconnected adjacent *** method,seamlessly integrated into a multi-scale topology optimization framework using the level set method,exhibits its efficacy through numerical examples,showcasing its prowess in optimizing 2D and 3D functionally graded materials(FGM)and multi-scale topology *** essence,the pressing issue of interface connections in complex structure design is not only addressed but also a robust methodology is introduced,substantiated by numerical evidence,advancing optimization capabilities in the realm of functionally graded materials and cellular structures.